Assess the metrological characteristics of photoplethysmographic device to peripheral circulation diagnostics

Abstract

The aim of the research - to assess the main metrological characteristics of photoplethysmographic device for peripheral circulation diagnostics. It’s necessary for assessment the technical level of designed device. The block diagram is built and mathematical model of the photodetector based on a pair of photodiode-operational amplifier is composed. Transformation equation is composed and the spatial function of measuring channel conversion is obtained. The formulas for the calculation of the metrological characteristics such as sensitivity, influence influential factor values, speed values of the influential factor changes on the source parameter, the nominal conversion function, absolute multiplicative and absolute additive errors and their graphics are obtained.